1967 Shelby GT350 EARLY FLAT gas cap

From your photo: Seems the color is a little too deep toward gold. I'm saying this because it looks like a flattened out curved emblem from a later car. Some of us have taken to doing this as the original flat ones faded to almost silver early on.
These Flat emblems were used up to car number 75 or so, some say #84.

The difference is that the flat emblems were etchings, the curved emblems are stamped. What car do you think this is off of?

Some others more knowledgable may also answer this post

 

from what i can see it looks to be the correct looking aluminum adapter . I can't tell anything about originality or condition of the pop open gas cap. The gas cap emblem looks to be a regular production concave emblem that has been successfully flattened but a little scratched up. The originals have different artwork and color. I know you didn't ask but you need to make up some Bat Wings to replace the Shelby logo in the Batmobile wheel center cap . Bob

 

The additional pictures did help out greatly.Better pictures=better results . The side profile shows the lack of de bossing which is consistent with the early flat gas cap. It is hard to determine what the true color is from the photos because there is a variety of shades from one picture to the next on the photbucket pictures So I don't know how faded it would be compared to a unfaded one. The artwork and it's different nuances are comparable as well. Too bad it is so scratched up . It is a great reference piece and would be appropriate on a well worn driver type or well worn survivor car but unfortunately it would stand out in a not so complimentary way on a fresh restoration where everything else looked new. Bob